$(function () {
	var widHeight = $(window).height(); // 页面高度
	
	var artHeight = $('.article_content').height(); // 获取实际高度	
	if (artHeight > (widHeight * 1)) {
		$('.article_content').height(widHeight * 1 - 285).css({ 'overflow': 'hidden' });
		var article_show = true;
		$('.read_more_btn').on('click', bindRead_more);
	} else {
		article_show = true;
		$('.readall_box').hide();
	}
	function bindRead_more() {
		if (!article_show) {
			$('.article_content').height(widHeight * 1).css({ 'overflow': 'hidden' });
			$('.readall_box').show();
			article_show = true;
		} else {
			$('.article_content').css({ 'overflow': 'hidden' ,height:'auto'});
			$('.readall_box').hide();
			article_show = false;
		}
	}
})